At 100 employees, the PEO question for orthodontists changes meaningfully from what it looks like at 5 or 50. Crossroads — PEO is still viable but standalone benefits broker + HRIS becomes a real comparison. This page walks through where a 100-employee orthodontists operation actually sits in the PEO buying decision.
At 100 employees, PEO economics are still defensible but the alternative — direct benefits broker + standalone HRIS + part-time HR generalist — becomes genuinely competitive. The question shifts from "is PEO cheaper" to "is PEO better for our specific situation." Operations that stay in the PEO at this scale typically do so because they value the compliance offload, the HR advisor relationship, or industry-specific PEO expertise that's hard to replicate internally. Operations that switch out typically do so because they want more control over benefits design, want to manage their own carriers, or have grown HR expertise internally.
What's next: Above 150 employees, in-house HR with broker typically becomes economically favorable — some PEOs offer ASO (admin-only) downgrades at this point.
At 100 employees, the PEO math is competitive but no longer obvious. Expect PEPM all-in in the $230–$340 range across PEOs. The alternative — direct benefits broker + standalone HRIS + part-time HR generalist (or full-time at this size) — typically lands in the $200–$300 PEPM range when you load in all the components.
For orthodontists at this size, the decision shifts from cost to fit. Most operations that stay in the PEO at this scale do so because they value the compliance offload, the HR advisor relationship, or PEO industry expertise that's hard to replicate. Most operations that switch out value control over benefits design + carrier selection. Run both scenarios on paper before deciding.
The orthodontic workforce is small but specialized, and the PEO comparison has three sharp angles:
Orthodontic assistant retention. A trained ortho assistant — comfortable with bonding, archwire changes, separator placement, Invisalign attachments — takes 6–12 months to develop. Losing one to a practice across town costs the equivalent of a year of revenue per chair. Benefits depth is the retention lever.
Treatment-coordinator and consultation roles. Case presentation is its own discipline. Treatment coordinators are sales-adjacent but clinically-aware. PEO HRIS systems handle the hybrid role correctly when the comp structure includes consultation conversion bonuses.
Multi-location and remote consultations. Practices serving regional populations often run satellite offices or remote consultation models. Multi-state compliance becomes relevant.
NCCI 8868 applies sitewide for clinical staff. Front-office, treatment coordinators, and marketing on 8810. Claim patterns are minor — ergonomic strain from clinical positioning, occasional sharps injuries. Standard mod handling.
Group health, dental, vision, 401(k) match, paid time off scaled for the long-treatment-cycle work (patients return every 6–8 weeks; staff absence has real continuity impact), and continuing-education stipends. EAP support for the high-volume patient-interaction workload also matters.
PEO pool placement is usually decisive — independent orthodontic practices compete against orthodontic-DSO offers, and benefits depth is often the difference.
Single-location practices with 8–15 employees often find PEO economics work cleanly. Multi-location regional practices (3+ locations) almost always benefit. Above ~40 employees, in-house HR with broker becomes economic.
| Where you are | Honest answer for orthodontists at 100 employees |
|---|---|
| Owner-operator + 1–3 employees | Premature for most PEOs. Payroll software (Gusto, ADP RUN) plus a standalone benefits broker is usually cheaper at this size. Revisit when you cross 5–10 employees, or sooner if you start losing people to competitors with group benefits you can't match. |
| 5–15 employees, group benefits becoming a retention issue | Worth quoting. PEO pool pricing on group health, dental, vision, and 401(k) often closes the benefits gap with larger employers. Workers comp pool placement may also help if your experience mod is unfavorable. |
| 15–50 employees, multi-state or compliance-heavy | Usually a clear PEO case. Multi-state SUTA registration, state-specific paid leave, OSHA documentation, and HR compliance load all compound at this size — PEO admin offload typically pays back fast. |
| 50–150 employees, established operation | Mixed. A standalone benefits broker plus an HRIS becomes competitive at this size; some operations transition to ASO (admin-only) at this point to keep more control over benefits design and carrier selection. |
| 150+ employees, or unfavorable workers comp mod at any size | Worth a structured comparison either way. Above 150, in-house HR with broker is often most economic. If your workers comp mod is elevated, PEO pool placement can soften underwriting materially regardless of headcount. |
Quality PEOs at 100 employees typically quote $200–$320 PEPM all-in across the seven-dimension comparison (admin fee, comp premium, benefits premium, technology, HR support). The variance across providers for the same scope is usually 15–25%, which is why getting three or four serious quotes matters more than getting one or two.
At 100 employees, your leverage and the federal-compliance load both shift. Federal triggers (FMLA at 50, ACA at 50 FTE, EEO-1 at 100) materially change what HR support is worth. PEO negotiation leverage peaks roughly at 20–60 employees and tapers as you cross 100. Match the PEO's strengths to where you are right now, not where you were two years ago.
PEPM rates typically don't recalculate at each milestone — most PEOs apply graduated discount tiers as headcount grows, so you keep most of the early-stage pricing. The bigger consideration is contract length: if you signed a 36-month deal at low headcount, you may be locked in at a size where in-house alternatives start beating the PEO. Confirm renegotiation rights in the contract before signing.
Yes — PEO HRIS systems track expanded-function certifications where state law allows orthodontic assistants to perform specific procedures. Confirm during demo that your state's framework is supported.
PEO payroll handles base + commission cleanly when the structure is documented. Most modern PEO platforms support split-pay scenarios. Confirm bonus / commission cadence (monthly, per-case) during demo.
Standard — most established PEOs handle multi-location dental/ortho practices routinely, with centralized HR and per-location cost allocation. Confirm HRIS supports location-specific reporting.
No — PEOs handle payroll and HR, not supplier billing. Align practice management + supplier accounts stay with your in-house finance team.
If you're comparing PEOs for orthodontists at 100 employees, these adjacent verticals share workforce, regulatory, or buyer dynamics worth comparing alongside it.
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